臥薪嚐膽 [ㄨㄛˋ ㄒㄧㄣ ㄔㄤˊ ㄉㄢˇ; wo4 xin1 chang2 dan3] lit. to lie on firewood and taste gall (idiom); fig. suffering patiently, but firmly resolved on revenge ◄ ►